I've had bad experience with the ABS on my MY06 as well. I use to track a MY03 before and I never had any issues. My 06 goes into limp mode, especially if I get the car a bit out of shape. I think the computer trips out and does a "systems check" sort-a-speak before turning the ABS back on. I think out cars are a bit rear biased too which makes it pretty easy to swap ends if you aren't paying attention or are relying on the ABS (ask me how I know ).

In the future I might pull the fuse for track days and play with the bias via pads.

 

This has caused other cars ABS to malfunction, especially when using Carbotech XP10 or 8 pads. You should always use compressed air to blow off the ABS sensors when you pull the wheels. The first time I looked at my sensors they had a crap load of metal filaments attached to the magnetic ABS sensors.

As for ABS failing only on the track, how often are you getting into ABS on the street? I can't remember the last time it happened to me.

 

i sometimes get to ABS under hard braking. i'm using pretty crappy tyres so maybe they tend to lock up easier.